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teniiibus angulis acutis variis egredientibus, ramosis inter se conjunctis; 
nervis tertiariis ramosis dictyodromis, reticulo prominente, maculis ultimae 
ordinis apertis. 
Obs. — By a superficial comparison one might consider these leaves to 
he Sapindacece, especially if compared with the leaf of Sapindus densifolius, 
Heer (Tertiarflora der Schweiz, vol. Ill, PL LXX, fig. 1). But on closer 
examination one will easily perceive that their likeness to the just-named 
species, though striking at first sight, is not found to exist on a closer 
examination. At all events, the leaves are not pinnate, but only pinnatifid ; 
their segments arc sessile and somewhat decurrent along the rachis, being 
lanceolate, falciform, toothed towards the apex, and oblique at the base. The 
terminal segment is rhomboidal-ovate and obtusely lobed. The segments 
of the specimen, Pig. 10, being very approximate, cover one another along 
their upper borders. The shape of the leaf is broadly oblong, and its petiole 
incompletely preserved. The leaf, Pig. 8, shows a petiole of 17 millimeters 
in length and a narrower lamina. Its segments being as approximate as 
those of the former, are smaller. Another specimen not figured here, repre- 
sents a part of a still smaller leaf, the segments of which are connected 
towards the apex. Another specimen, Pig. 9, exhibits more separated though 
somewhat decurrent segments. On the latter the nervation is best preserved. 
The primary nerve is only prominent at base, very much thinned along its 
course and curved towards the terminal segment. The secondary nerves are 
thin, ramous, united with one another ; the tertiary ones lose themselves in 
a comparatively prominent network, the finest meshes of which are open. 
Pig. 9b represents the net less, and Pig. 9c more, magnified; Pig. 9a shows 
the form of a single mesh, strongly magnified. 
The characters described suit no genus better than Iihopala, exhibiting 
species which possess pinnatisect leaves furnished with a nervation, both very 
similar to the fossil one. Pig. 9 jd shows a part of the nervation of the 
Brazilian Iihopala ajjinis, Bold, representing similar open net-meshes like 
those of our species. 
The genus Iihopala is confined to tropical America, excepting only one 
species, R. Bleasdalei , P. v. Muell., discovered in New South Wales some 
years ago. 
Locality and Horizon. — Old Hose Valley Lead, with many of the 
preceding species. 
